MERCURY 48-16317A4 Propeller Pitch Lh Counter Rotation

( Manufacturer Part Number: 48-16317A4 ), ( Part Type: Propeller Counter ), ( Propeller Rotation: Counter ), ( Country Of Origin: United States )

Review MERCURY Propeller Inch Pitch Lh Counter Rotation Refurbished fits 2014–2019

The **Mercury 48-16317A4 Propeller** is a high-performance, precision-engineered marine propeller designed specifically for Mercury outboard engines, tailored to deliver exceptional efficiency, reliability, and thrust in a variety of boating applications. This **14-inch diameter, 19-pitch, left-hand (LH) counter-rotation** propeller is crafted from high-grade, corrosion-resistant materials, ensuring durability and longevity even in the most demanding marine environments. The counter-rotation design enhances overall boat performance by reducing torque and improving handling, making it an ideal choice for vessels where smooth operation and responsive maneuverability are critical. With its optimized blade geometry, this propeller is engineered to maximize propulsion efficiency, reducing fuel consumption while maintaining strong acceleration and top-end speed. The **A4** designation suggests a slightly aggressive blade design, providing a balance between speed and torque for applications such as fishing boats, personal watercraft, or utility vessels where both power and efficiency are essential. Whether used in saltwater or freshwater, this propeller is built to withstand the rigors of daily use, offering a robust solution for Mercury outboard owners seeking enhanced performance without compromising on reliability. Its precise engineering ensures minimal vibration, extended blade life, and seamless integration with Mercury s engine systems, making it a standout choice for those who demand the best in marine propulsion.

**Overview of the Mercury 48-16317A4 Propeller (14" x 19" Pitch, LH, Counter-Rotation)**

The Mercury 48-16317A4 is a fixed-pitch propeller designed for outboard motors, specifically the Mercury 4.6L to 6.0L V8 series. It is a left-hand (LH) propeller with a 14-inch diameter and 19-inch pitch, intended for counter-rotation applications (often paired with a right-hand propeller on the opposite shaft for twin-engine boats). Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Performance and Efficiency**

- **Optimized for Power and Speed**: The 19-inch pitch is designed to handle higher horsepower engines (typically 200 300 HP), providing strong acceleration and top-end speed. This makes it suitable for performance boats, cruisers, and fishing vessels where power is a priority.

- **Counter-Rotation Benefits**: When paired with a right-hand propeller on a twin-engine setup, counter-rotation reduces torque and improves straight-line stability, reducing the need for excessive rudder input. This is particularly useful for larger boats or those with heavy loads.

- **Fuel Efficiency**: A well-matched propeller (like this one for its engine range) can improve fuel economy by optimizing RPM and reducing drag.

2. **Durability and Build Quality**

- **High-Strength Materials**: Mercury propellers are typically made from high-grade aluminum alloys or stainless steel, depending on the model. The 48-series is known for its robust construction, capable of handling the stresses of high-performance use.

- **Balanced Design**: Properly balanced propellers reduce vibration, which can extend the lifespan of the engine and outboard components. Mercury propellers undergo rigorous testing to minimize imbalance.

- **Corrosion Resistance**: Many Mercury propellers are treated or coated to resist corrosion, which is critical for saltwater use.

3. **Compatibility and Versatility**

- **Wide Engine Compatibility**: This propeller is designed for Mercury 4.6L 6.0L V8 outboards, which are common in mid-sized to large boats (e.g., 20 30 feet). It works well with models like the Mercury 200 300 HP series.

- **Aftermarket Support**: Mercury propellers are widely available through dealers, marine supply stores, and online retailers, making replacements or upgrades easy to source.

- **Customization Options**: Mercury offers propellers with different pitch and diameter options, allowing boat owners to fine-tune performance for specific applications (e.g., cruising vs. planing).

4. **Reliability**

- **Proven Track Record**: Mercury is a trusted brand in the marine industry, and its propellers are known for reliability in both freshwater and saltwater environments.

- **Warranty Support**: Mercury propellers often come with warranties, providing peace of mind against defects or premature wear.

5. **Ease of Maintenance**

- **Simple Design**: Fixed-pitch propellers like this one are straightforward to inspect, clean, and replace. There are no moving parts to wear out or adjust.

- **Accessibility**: The size (14" diameter) makes it manageable for most boat owners to handle during installation or removal.

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### **Cons**

1. **Limited Adjustability**

- **Fixed Pitch**: Unlike adjustable-pitch propellers, this propeller has a fixed 19-inch pitch, which may not be ideal for all conditions. In calm waters or light loads, a lower pitch might be more efficient, while in rough seas or heavy loads, a higher pitch could struggle to provide enough thrust.

- **No Fine-Tuning**: If the boat s performance isn t optimal (e.g., slow acceleration, excessive RPM), you may need to replace the propeller entirely rather than adjusting it.

2. **Potential for Cavitation**

- **High-Pitch Propellers**: The 19-inch pitch can be prone to cavitation (bubble formation that reduces efficiency) if the engine is running at very high RPM or if the propeller is undersized for the engine s power. This can lead to noise, vibration, and reduced performance.

- **Saltwater Corrosion**: While Mercury propellers are designed to resist corrosion, prolonged exposure to saltwater can still cause wear over time, especially if the propeller is not regularly cleaned and maintained.

3. **Cost**

- **Premium Price**: Mercury propellers are generally more expensive than generic or aftermarket brands. The 48-series is positioned as a high-performance option, which reflects in its cost.

- **Replacement Parts**: If the propeller sustains damage (e.g., from a strike or corrosion), replacement can be costly, especially if the boat relies on a twin-engine setup.

4. **Weight**

- **Heavy for Some Applications**: The 14" x 19" propeller is relatively large and heavy, which can add to the boat s overall weight. This may not be ideal for smaller or lighter boats where weight reduction is a priority.

- **Handling Challenges**: The size and weight can make it cumbersome to handle during installation or removal, especially for boat owners without proper tools or assistance.

5. **Specific Engine Requirements**

- **Not Universal**: This propeller is specifically designed for Mercury 4.6L 6.0L V8 engines. Using it on a different engine (e.g., a smaller or larger displacement) without proper matching can lead to poor performance, excessive wear, or damage.

- **Twin-Engine Pairing**: For counter-rotation setups, you must pair it with a right-hand propeller of similar specifications. Mismatched propellers can negate the benefits of counter-rotation and cause handling issues.

6. **Potential for Wear Over Time**

- **Blade Erosion**: Even with corrosion-resistant materials, the blades can wear down over time due to saltwater, debris, or improper use. This reduces efficiency and may require eventual replacement.

- **Vibration and Stress**: High-performance use can accelerate wear on the propeller and its mounting components (e.g., the propeller nut or shaft). Regular inspections are recommended.

---

### **Conclusion**

The Mercury 48-16317A4 propeller is a high-quality, performance-oriented choice for Mercury 4.6L 6.0L V8 outboards, particularly in twin-engine counter-rotation setups. Its strengths lie in its durability, efficiency for high-horsepower applications, and the reliability of the Mercury brand. It excels in scenarios where power, stability, and straight-line performance are prioritized, such as in cruising, fishing, or performance boats.

However, its fixed pitch limits adjustability, and it may not be the best fit for all conditions or smaller boats. The cost and weight are also considerations, especially for budget-conscious or lightweight applications. Additionally, proper maintenance is essential to prevent cavitation, corrosion, and premature wear.

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### **Recommendation**

- You have a Mercury 4.6L 6.0L V8 outboard (or compatible engine) and are running a twin-engine setup where counter-rotation is beneficial.

- Your primary use involves high-speed cruising, fishing, or performance boating where power and stability are critical.

- You prioritize durability, brand reliability, and the ability to handle higher horsepower (200 300 HP) without sacrificing performance.

- You are willing to invest in a high-quality propeller that will last with proper maintenance.

- You need adjustability (e.g., for varying loads or conditions), in which case an adjustable-pitch propeller might be better.

- Your boat is smaller or lighter, and weight is a concern you may opt for a smaller or lighter propeller.

- You are on a tight budget, as generic or aftermarket propellers may offer similar performance at a lower cost.

- Your engine is not within the specified range, as mismatched propellers can harm performance or the engine.

- Regularly clean the propeller to remove marine growth (e.g., barnacles, algae), which can reduce efficiency and cause imbalance.

- Inspect for signs of corrosion, cracks, or blade erosion, especially in saltwater environments.

- Ensure the propeller is properly balanced and securely fastened to avoid vibration.

- Monitor engine performance (RPM, fuel efficiency, acceleration) to detect early signs of propeller mismatch or wear.

In summary, the Mercury 48-16317A4 is a solid choice for its intended applications, but it s important to weigh its pros and cons against your specific boating needs and budget.

Details:

Mercury Marines passion for performance is matched by your drive the new, unknown. There are no nicks, bends or damage too prop whatsoever. Flo-Tor II Hub Kit For Mercury, Mariner or Mercuries included. Pictures show all 3 blades front and back: Vengeance propeller 16317A46 has a 14 diameter with 19 pitch in left-hand rotation.

This is a completely refurbished and balanced propeller. Our legendary reliability and durability let you boldly embrace your next adventure large or small knowing you re backed by the best quality design, engineering, materials. The following is the of prop. This Vengeance propeller will fit Mercury and Mariner 2-cycle 4-stroke outboards from 135 hp 1978 newer, 90 through 115 Command Thrust 2014 newer with 15 tooth spline, Optima Verano to 350 plus Mercuries Alpha One Bravo stern drives.

part #: 4816317a4 prices

• $150.00-$359.99

specifications propboapar:

• for makes: Mercury
• for years: 2014-2019
• mpn: 48-16317a4
• part type: Propeller Counter
• propeller rotation: Counter
• country of origin: United States

shipping propboapar:

• service: USPS Ground Advantage
• type: Calculated
• carrier: USPS
• transit: 4-10 Days
• cost: $16.65
• class: Standard

seller propboapar:

• city: Grand Island, New York
• # reviews: 90
• rating: 100.0%

returns propboapar:

• policy: No Returns

general propboapar:

• Parts Accessories > Boat Parts > Propellers
• condition: Used

payments propboapar:

• wallet: Paypal
• other
• credit card: Visa

offer propboapar:

• options: Ship-to-home
• quantity: 1
• availability: In Stock
• started: May 10, 2026
• sold: 0
• best offers: True

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